ElfHosted Comet gets partially-restored RD/DL/AD support with StremThru

Hey folks,

Since RD/AD/DL pulled their cache-checking endpoints, https://comet.elfhosted.com hasn't been able to serve streams (TorBox and Premiumize still work though).

While g0ldyy works on his big rewrite, I've merged (into the ElfHosted image) an outstanding PR to add StremThru support.

What this means for us is that, without any changes on your end, Comet will use the public StremThru instance to search for cached hashes in RD/AD/DL, making it functional with RD/AD/DL once again.

StremThru's TV series support is a work-in-progress, but movies seem to work reasonably well, and the more users who use the StremThru instance (both public and private), the more the cache will bulk out.

Enjoy! D